Gamma-band responses in the brain: A short review of psychophysiological correlates and functional significance
Gamma-band responses in the brain: A short review of psychophysiological correlates and functional significance
复制标题
DOI：
10.1016/s0167-8760(96)00051-7
复制
发表时间：
1996-11-01
影响因子：
3
通讯作者：
Basar, E
中科院分区：
文献类型：
--
作者：
BasarEroglu, C;Struber, D;Basar, E
目前的研究表明，伽玛波段（40 Hz）活动存在于不同物种的许多大脑结构中，具有看似不同的功能/行为相关性。这种节律在不同的结构和不同的实验条件下也具有不同的动态：它自发存在和/或可以以不同的潜伏期和与感觉认知事件的关系被唤起、诱导或发射。最近在细胞水平上对伽马能带活性的测量强调了高水平的功能相关性，例如特征的结合。相比之下，人类和动物的场电位测量表明，伽马带反应可能在“强制性”感觉和认知处理中具有多重功能。关于伽马活动的发生器，实验数据暗示大脑中存在分布式伽马系统。此外，建议将伽马节律解释为通用功能构建块。
The present study shows that gamma-band (40 Hz) activities exist in a number of brain structures of different species, with seemingly different functional/behavioral correlates. This rhythm has also different dynamics in various structures and under different experimental conditions: it exists spontaneously and/or can be evoked, induced or emitted with different latencies and relations to sensory-cognitive events. Recent measurements of gamma-band activity at the cellular level stress high level functional correlates such as binding of features. In contrast, field potential measurements in both humans and animals demonstrate that gamma-band responses may have multifold functions both in 'obligatory' sensory and in cognitive processing. With respect to the generators of gamma activity, experimental data hint at the existence of a distributed gamma system in the brain. Furthermore, an interpretation of gamma rhythms as universal functional building blocks is suggested.